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首页> 外文期刊>Indian Journal of Weed Science >Chemical weed control of dry direct-seeded rice under zero tillage incentral mid-hill region of Nepal
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Chemical weed control of dry direct-seeded rice under zero tillage incentral mid-hill region of Nepal

机译：尼泊尔中山地区零耕作下干直稻的化学杂草控制

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摘要

The performance of different herbicides for the weed control of dry direct-seeded rice (DDSR) under zero tillage was evaluated by field experiment during rainy season of 2017 at NARC, Lalitpur, Nepal. The treatments consisted of 8 different herbicidaltreatments (pendimethalin 1.0 kg/ha, pendimethalin 1 kg/ha followed by bispyribac-Na 35 g/ha, pendimethalin 1.0 kg/ha followed by {fb) tank mix of pyrazosulfuron 20 g/ha + bispyribac-Na 25 g/ha, pendimethalin 1.0 kg/ha fb 2,4-D 1.0 kg/ha, pendimethalin1.0 kg/ha fb pyrazosulfuron 20 g/ha, pendimethalin 1.0 kg/ha fb penoxsulam 14 g/ha, pendimethalin 1.0 kg/ha fb sulfosulfuron 30 g/ha, pendimethalin 1.0 kg/ha fb 2,4-D 1.0 kg/ha under co-culture with Sesbania) and a weedy check treatment with 3 replications under randomized complete block design. Result of the experiment revealed significant reduction in the weed density and increase in rice yield due to application of herbicides. Sequential application of pendimethalin (pre) fb tank mixture of pyrazosulfuron + bispyribac-Na (post) possess higher weed control efficiency and yielded the highest rice grain yield (3.78 t/ha), which was statistically at par with pendimethalin fb 2,4-D under Sesbania co-culture (3.44 t/ha) and pendimethalin 1.0 kg/ha fb penoxsulam 14 g/ha (3.09 t/ha). Similarly, application of pendimethalin 1.0 kg/ha (pre) fb tank mixture of pyrazosulfuron 20 g/ha + bispyribac-Na 25 g/ha recorded the highest net returns of NRs. 31,760/ha and B: C ratio of 1.42 resulting to be the most economical and efficient herbicidal treatment option in DDSR under zero tillage.
机译：2017年雨季下雨季节的田间实验评估了不同除草剂对干燥直接稻（DDSR）的杂草控制的性能。该治疗组成为8种不同的草本治疗（Pendimethalin 1.0kg / ha，Pendimethalin 1kg / ha，然后是Bispyribac-Na 35g / ha，Pendimethalin 1.0kg / ha，其次是吡唑氟醚20g / ha + bispyribac-的{fb）罐混合物。 Na 25 g / ha，Pendimethalin 1.0 kg / ha fb 2,4-d 1.0 kg / ha，Pendimethalin1.0kg / ha fb吡唑氟醚20 g / ha，pendimethalin 1.0kg / ha fb enoxsulam14g / ha，pendimethalin 1.0kg / HA FB Sulfosulfuron 30g / ha，Pendimethalin 1.0 kg / ha fb 2,4-d 1.0 kg / ha在共同培养下与萨斯巴尼亚的共同培养）和杂草检查治疗，随机完整块设计下的3次复制。实验结果显示出杂草密度的显着降低，由于除草剂的施用而导致的水稻产量增加。 Pendimethalin（前）FB罐混合物的吡唑氧脲+ Bispyribac-Na（Post）具有更高的杂草控制效率，得到最高水稻产量（3.78吨/公顷），其与Pendimethalin FB 2,4-统计学D在索斯巴尼亚共同培养下（3.44吨/公顷）和PENDIMETHALIN 1.0 kg / ha Fb enoxsulam 14g / ha（3.09 t / ha）。类似地，PENDIMETHALIN 1.0kg / ha（前）FB罐混合物的吡唑氟磺隆20g / ha + bispyribac-na 25g / ha的施用记录了NRS的最高净返回。 31,760 /公顷和B：C比率为1.42，结果是DDSR下最经济高效的除草治疗选择零耕作。

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